Can zebra danios live with otocinclus?

Verdict
Yes

Yes. Zebra danios and otocinclus get along in the same tank. Both are fine at 72–77°F. Plan on at least 20 gal.

Zebra danioZebra danio65–77°F · pH 6.5–8 OtocinclusOtocinclus72–79°F · pH 6–7.5

Why it works

Water side by side

55°60°65°70°75°80°85°90°Both: 72–77°Zebra danio 65–77°Otocinclus 72–79°
The green band is the temperature range both can live in.
456789Both: 6.5–7.5Zebra danio 6.5–8Otocinclus 6–7.5
The green band is the pH both tolerate.

Size to scale

Zebra danio · 2 inOtocinclus · 2 in0"1"2"3"4"5"6"
Adult length in an aquarium. A fish can swallow anything that fits in its mouth, roughly a third to half its own length for predators.

Care at a glance

Zebra danioOtocinclus
Temperature65–77 °F72–79 °F
pH6.5–86–7.5
Adult size2.0 in2.0 in
Minimum tank10 gal20 gal
TemperamentPeacefulPeaceful
Swims atTopBottom
GroupGroups of 6+Groups of 6+
DietOmnivoreHerbivore

Better tank mates for zebra danios

All zebra danio tank mates

Better tank mates for otocinclus

All otocinclus tank mates

Questions

Can zebra danios live with otocinclus?

Yes. Zebra danios and otocinclus get along in the same tank. Both are fine at 72–77°F. Plan on at least 20 gal.

What temperature suits both zebra danios and otocinclus?

72–77 °F. Zebra danios need 65–77 °F, otocinclus need 72–79 °F.

What size tank do zebra danios and otocinclus need together?

At least 20 gal, set by the otocinclus. Add space for each extra fish.